Samuel k



I (No Model.) V Y S. K. BURGER.

SWING.

Patented July 8, 1890.

of [P131 22 f dwvemto c wivmaooea UNITED S ATES PATE T OFFIC SAMUEL K. BURGER, OF STEWARTSTOWN, PENNSYLVANIA, ASSIGNOR' OF ONE-HALF TO THOMAS G. EDIE, OF SAME PLACE.

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SPECIFICATION formingpart of Letters Patent'No. 431,552, dated July 8,1890.

Application filed February 19, 1890. Serial No. 340,975. (No model.) I

To all whom it may concern:

Be it known that I, SAMUEL K. BURGER, a citizen of the United States, residing at Stewartstown, in the county of York and State of Pennsylvania, have invented certain new and useful Improvements in Swings; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

The objects of this invention are to make a swing which may be operated with slight effort, which will permit easy entrance or exit by being adapted to be locked against movement when desired, which will add to the comfort of the occupant, and which may be reduced to a small compass for shipment without completely disorganizing the apparatus.

With these ends in View the invention consists in providing a swing with a locking-lever to prevent lateral movement when it is desired to enter the swing; in providing a sliding foot-board which may be moved out of the way,so as to permit an occupant to seat himself in the swing without operating the driving mechanism; in providing an adjustable back for the seat, which may be locked in several positions of adjustment; in locating the point of application of power, so that a strong lateral pull may be given to the swing; in providing the swing with an adjustable cover or shade, and in details which will be pointed out in the claims appended to this specification.

In the accompanying drawings, which illustrate the invention, Figure 1 is an elevation, part being broken away, of one side of the swing. Fig. 2 is an elevation of the other side of the swing. Fig. 3 is a detail View showing the adjusting and locking mechanism forthe back of the chair or seat. Fig. 4 shows in detail the sliding foot-board. Fig. 5 shows inlplan the adjustable shade, the textile covering being removed to better illustrate the construction. Fig. 6 is a detail View together by suitable cross-beams.

showingthe manner of mountingthe shade Upon an iron rod 3, extending transversely between two of the top beams, are pivotally hung the side bars 4 4 of the swing upon which the chair is mounted. To the lower ends of the bars 4 4' are pivoted levers 5 5', on which the foot-board 6 is supported, said foot-board being provided with lugs or guides 7 7 which permit it to be moved in a direction parallel to the length of the foot-levers, but prevent lateral displacement. The levers 5. 5 are connected by means of links 8 Swith connectin g-bars 9 10 9 10, which are pivotallyjointed at points 11 ll and have their other ends pivotally secured to the swing-bars and a fixed part of the frame, respectively. The upper ends of the bars 10 10 are pivoted to'the frame at a point rearwardly of the pivotal point of thesWing-bars 4 4', so that when pressure is exerted upon the foot-board the swing will be driven backward, as by reason of the system of pivoted levers the swing must shift until the center of gravity falls within a perpendicular let-fall from the pivots 12 12. Besides the force of gravity the pressure on the foot-board will produce resultant motion in the swing until the angle formed by the arms or bars 9 10 becomes a minimum.

The lever system illustrated requires very little motion of the feet, and enables an cecupant of the swing to keep up the motion with comparatively little exertion.

On entering the swing it is desirable to move the foot-board out of the way. The provisions for sliding it, already referred to, permit this to be done. It is also desirable that the swing should not start until the occupant is fairly seated. I provide a lock device for this purpose, which also serves as a brake to bring the swing to a condition of rest, when desired. To the arm 9 (see Fig. 1) is pivoted an upwardly-extended bar 13, which is slotted at its upper end, the slot surrounding a pin or bolt 14, driven in the bar 4 of the 2 5. -the lower corner of the slot and being securely swing. A head on the pin prevents the bar 13 from outward displacement. A slotted wedge-shaped locking-bar 15, controlled by a lever 16, is placed under the arm 13. When the controlling lever is raised, the wedge crowds the walls of the slot firmly against the head of the pin and locks the swing against movement, for no movement of the swing can occur without a rising or falling of the bar 13.

The back of the chair is adjustable, and may be locked in either of two positions by means of a controlling-lever 17. (See Fig. 2.) The back of the chair 18 is pivoted to the fixed seat at 19 19', and may be tilted forward or backward by means of a crank-shaft 20, co-operatin g with slotted extensions of the chair-back. The lever 17 is connected by a link 22 with an arm 24 of the crank-shaft 20. The slots 25 25 in the extensions of the chairback are made of such a length and the crankshaft is so pivoted that when set in the position shown in Fig. 1 the chair-back will be locked, by reason of the crank-shaft lying in braced against the wall thereof. When in the other position, (see Fig. 2,) the extensions of the chair-back bear upon the cross-piece 26, upon which the seat of the chair is mounted. 'By raising or lowering the lever 17 the chair-back may be readily shifted to the desired position. v

In order to provide a shade for the occupant of the swing at any hour of the day, I provide a sliding frame 27, over which a cover of textile material 28 may be placed. The frame is provided with guide-rails 29 29', (see Figs. 5 and 6,) co-operating with grooves or recesses 30 in supports 31 31, attached to the fixed frame-work of the swing. A portion of the rails 29 29 is cut away at a suitable point, as shown in Fig. 5 at 32, so as to permit the frame to be placed in position or disconnected from the swing for purposes of shipment. The frame may be slid forward or backward in the grooves to produce shade for the occupant of the swing irrespective of the position of the sun.

The bolts 33 (see Fig. 1) are made removable, so that the legs of the swing-supporting frame may be folded back and the whole structure reduced to a small compass for shipment.

Upon the side bars 4. 4 is supported a flybrush 34, which as the swing moves agitates the air and flutters over the occupant, and thus serves to promote his comfort.

The slot in the bar 13 is made of such a length that itwill limit the amplitude of the vibration of the swing. If the occupant operates the mechanism too hard, this provision will form a safeguard against accident, the end walls of the slot impinging on the bolt 14: and checking the motion.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent, is+

1. In a swing, the combination of the fixed frame, a swinging seat mounted on rigid bars pivotally suspended in said frame, a foot-lever 5, pivoted to the bars, link 8, pivoted at intermediate points of lever 5, and an auxiliary lever 9, pivoted to the swing-bar, and link 10, connecting the outer end of link 9 with a point of the fixed frame rearward of the swing-pivot.

2. A foot-lever for a swing, provided with a sliding foot board or rest, whereby it may be slid out of the way to permit easy entrance to or exit from the swing, and a brake tolock the swing in a position of rest.

3. A swing providedwith a brake accessible to an occupant, so as to bring it to a state of rest or maintain it in that position.

4. The combination, with the rigid pivoted swing, of a reciprocating bar connected to a fixed point of the supporting-frame, and a lock for preventingrelative movement of the reciprocating bar and the swing.

5. A swing provided with a chair, said chair having a pivoted back, a slotted arm rigidly secured to the back, and a crank-shaft rocking on a center lying in a plane passing through a central point of the slot, whereby the chairback will be locked by the end walls of the slot when tilted forward or backward.

6. A swing provided with a shade supported in a rigid frame longitudinally adjustable in sliding bearings, as and for the purpose described.

7. The combination, with a swing, of a reciprocating bar operated by the motion of the swing, and a check pin or bolt to limit the extent of the movement of the bar and thereby prevent excessive motion of the swing.

In testimony whereof I affix my sign ature in presence of two witnesses.

SAMUEL K. BURGER.

Witnesses:

JACOB BOWMAN, Louis H. J ONES. 

